Apparatus for galvanizing or otherwise coating articles



C. J. LANE. APPARATUS FOR GALVANIZ ING OR OTHERWISE COATING ARTICLESAPPLICATION FILED AUG-6, 1920- Patented Oct 4, 1921.

UNITED, STATES PATENT OFFICE.

CHARLES JOSHUA LANE, OF LONDON, ENGLAND, A S SIGNOR T0 CY'RIL FRANKELWELL. OF" LONDON, ENGLAND. v

APPARATUS For, GALVANIZING OR OTHERWISE COATING ARTICLES.

Specification of Letters Patent.

Application filednu iistf s, 1920. Sexual no, 401,765.

T 0 all 10 ham it may concern Be it known that I, ,CHARLES JosHUA 7LANE, a subject of the King of England, residing at London, England,have invented certain new and useful Improvements in Apparatus forGalvanizing or Otherwise Coating Articles, of which the following is aspecification. r J

This invention is, for improvements in or relating to apparatusotherwise coating articles and has for its object to. provide meanswhereby the progress of the process may be tested and known withoutinterrupting the process. r

According to this invention there is provided in an apparatus forcoating(for example, galvanizing) articles, the combination with a closedcontainer wherein the coating takes place, of an ante-chambercommunicating therewith, and a test-piece, (for example, a rod)projecting through the wall of said ante-chamber and fitting a holetherein,and through the ante-chamber into the container, said test-piecebeing adapted to be withdrawn from the nion 'through a'packing gland onthe end 3 thereof and through the trunnion into the interior of thedrum, and detent means for indicating or limiting the withdrawalof therod.-

According to' another feature of the invention the rod is formed with anotch or notches and there is also provided a washer" which is heldagainst movement longitudinally of the trunnion, buthangs loosely on therod so as to engage a notch thereon when brought to register with it,with or without means for raising the washer clear' of the notch topermit further withdrawal of the .rodfi/ r In'the accompanyin drawings,

Figurel is a centra vertical sectionof so for galvanlzingor V latter intwo -stages,"so that a portion of it whereon the;

pressure,

much of a galvanizing apparatus as'is neces- Patented 0a. 4, 1921 saryfor the understanding'ofthis invention Fig.2 shows a preferred form oftest-rod for use with the apparatus shown in F g. 1; .Fig; 3 is an endview of a further detail of the invention, and o I 'Fig. 4 is a centralvertical section showing a modified construction of the same detail.

Like reference characters s indicate like parts throughout-the drawings.

Referring to Fig, 1, the apparatus for gal vani'zing or otherwisecoating articles comprises a closed rotatable drum 1 0; This drum issupported atone end by a trunnion ll'provided with a central axial bore12 communicating atone end 'withthe interior of the drum 10. The otherend of this bore is re'duced'in diameter at 13, and any de: sired orsuitable form of gland withpacking 14 is provided at theouter end of thechamber 12 into-the container 10; This rod is of such lengththat when itoccupiesthe position shown inFig. 1, the portion of it lying within the"container 10 can receive a coating similar to the 7 articles therein,and then the rod can be withdrawn so as to bring this portion first intothe space 12', which constitutes an ante-chamber to the container 10,and when the coating is hardened, it can I be withdrawn through thepacking 14 to enable the coating'to be inspected.

In order to render as simple as possible the operation of withdrawal, itis preferred to provide a detent device governing each stage'of thewithdrawal of the rod, that is to say, the rod is withdrawn until thefirst engagement of a detent takes place, and it is then known that theportion ofthe rod which is to be inspected is lying within theante-chamber '12. During the further withdrawal of-the rod, it is drawnout until-the second engagement of the detent takes place, and it'is'should be a positive stop to from being withdrawn entlrely from thepreferred that this detent orifice 13. 'This is particularlyadvantageous when the process for coating involves the interior of thecontainer 10-being under as any escape of the contents through theorifice 13 is thereby The detent means illustrated in F g. 1- comprevented.

revent the rod prises a washer 16 whereof the central bore iscountersunk to provide a comparatively sharp edge 17 on that side of thewasher facing the drum 10. This washer is mounted in a cage-likestructure, conveniently formed on the nut of the gland 14. Thiswiththeirsleeves 20 are so spaced apart in Fig. 3.

, the washer-16 dropsv into the notch 21 and that the washer has acertain amount of free lateral movement as show-n most clearly Thiswasher is threaded on to the rod 15 so that it hangs thereon. The rod 15is provided with a curved notch 21 and an angular notch 22 providing ashoulder 23. The notch 21 is so positioned that when the rod iswithdrawn sufficiently far for that notch to engage the washer 16,theportion of the rod which has been coated is then shoulder 16 is sopositioned that whenit is engaged by the Washer 23 on further withdrawal of the rod, the coated part of the rod is outside the trunnionand available for inspection of the coating. It will be seen,

therefore, that no special care need be exercised in the withdrawaljofthe rod since thereb checks the withdrawal movement. This, owever, isnot a positive stop, since the rod has to lac-withdrawn farther. Thenotch 22 with the shoulder 23 does however constitute a positive stopsince the washer will not ride up the shoulder.

It is sometimes required, however, that the rod shall be entirelywithdrawn and-to enable this to be done, means are provided to lift thewasher up from its engagement being-illustrated in Fig. A lever 24 ispivoted at 25 on any suitable fixed part, of the machine, and anextension 26 of the lever is arranged to engage the edge of theWfiSlIQIjIfi. This extension may, if-'desired,,j

be made of springrnaterialso that it can yield to permit a- ,pin19 topass it during,

the-rotation of the drum. 1

In Fig; 4, a; modified arrangement is illustrated. In this case thewasher 16-has secured omit, or formed integrally, with it a sleeve 2 7which extends through the plate 18 -to the outside thereof. Thissleeve-27 vis suitably form'edwithout projecting parts at-its outer end-so thatit can be grasped by the operator-even although it is-in rotation andlifted fo'clearthe edge 17 ofv the washer '16 from the shoulder 23 andpermit the yfurtherwithdrawal of therod 15.

on will be seen that if Ethe; constructions illustrated in Figs. 3and4,0r other equ velent arrangements are used, the notch 21 need not be acurved notch, but may; be replaced by a shoulder notch similar to thenotch 22. 1

It will be seen that this invention provides means whereby the progressof the.

1. In an apparatus for treating material, 5

a closed container wherein the treatment takes place, an antechambercommunicating therewith, and a test-piece projecting through the wallof. said antechamber,

through said chamberrand into said oontainer Wherebyit is subjected tothe treatument therein, said test-piece being adapted lying within theante-chamber 12. The

to be withdrawn in a plurality of stages.

2. In an apparatus for treating material,

a closed container whereincthe treatment, takes place, an antechambercommunicating drawn in a plurality of stages, and means for indicatingthe conclusion of movement through each stage. V

3. In an apparatus for treating material, 7

a closed container wherein the treatment takes place, an antechambercommunicating therewith, a test-piece projecting through. the wall ofsaid antechamber, through said chamber and into said container whereby.it is subjected to the treatment therein, said with the shoulder 23,one such lifting means test-piece being adapted to be withdrawn in aplurality of stages, and means pre-- therewith, a test-piece projectingthro ugh the wall of said antechamber, through said chamber and intosaidcontainer whereby it 18 subjected to the treatment therein, saidtest-piece being adapted'to be withdrawn.

in a plurality of stages and formed with a notch, a washer held againstmovement longitudinally of the wall of said antechamber and hangingloosely thereon so. as to engage said notch when said notch is broughtto register with said washer.

5. In an apparatus for treating material,

the combination of a closed rotatable drum,

wherein the treatment takes place, a. hollow supporting trunnion thereonforming an antechamber to said drum, a packing-gland on the exposed endof the said trunnion, a test-rod extending from outside said trunnionthrough said packing-gland through said trunnion into said drum wherebyit is subjected to the treatment therein, said testrod being adapted tobe withdrawn in two stages, whereby the portion in the container iswithdrawn into the trunnion in the first stage and through thepacking-gland in the second stage.

6. In apparatus combination of a closed rota-table drum wherein thetreatment takes place, a hollow supporting trunnion thereon forming anantechamber to'said drum, a packing-gland said trunnion into said drum,said for treating material the I on the exposed end of said trunnion, atestrod extending from outside said trunnion through aid packing-glandand through test-rod being formed with a plurality of notches, a washeroutside said packing-gland hanging loosely on said test-rod andrestrained from movement longitudinally of the trunnion so as to engageeach of said notches when brought to register with it and means fordisengaging said washer from notch to permit further withdrawal of saidtestrod.

' In testimony whereof I afiix my signature. 7

CHARLES JOSHUA LANE.

